21948940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 53343360

約数和(自身を除く): 31394420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 41, 52, 58, 65, 71, 82, 116, 130, 142, 145, 164, 205, 260, 284, 290, 355, 377, 410, 533, 580, 710, 754, 820, 923, 1066, 1189, 1420, 1508, 1846, 1885, 2059, 2132, 2378, 2665, 2911, 3692, 3770, 4118, 4615, 4756, 5330, 5822, 5945, 7540, 8236, 9230, 10295, 10660, 11644, 11890, 14555, 15457, 18460, 20590, 23780, 26767, 29110, 30914, 37843, 41180, 53534, 58220, 61828, 75686, 77285, 84419, 107068, 133835, 151372, 154570, 168838, 189215, 267670, 309140, 337676, 378430, 422095, 535340, 756860, 844190, 1097447, 1688380, 2194894, 4389788, 5487235, 10974470, 21948940]

約数ペア:

[(1, 21948940), (2, 10974470), (4, 5487235), (5, 4389788), (10, 2194894), (13, 1688380), (20, 1097447), (26, 844190), (29, 756860), (41, 535340), (52, 422095), (58, 378430), (65, 337676), (71, 309140), (82, 267670), (116, 189215), (130, 168838), (142, 154570), (145, 151372), (164, 133835), (205, 107068), (260, 84419), (284, 77285), (290, 75686), (355, 61828), (377, 58220), (410, 53534), (533, 41180), (580, 37843), (710, 30914), (754, 29110), (820, 26767), (923, 23780), (1066, 20590), (1189, 18460), (1420, 15457), (1508, 14555), (1846, 11890), (1885, 11644), (2059, 10660), (2132, 10295), (2378, 9230), (2665, 8236), (2911, 7540), (3692, 5945), (3770, 5822), (4118, 5330), (4615, 4756)]